campbell



G. W. CAMPBELL. CASTING BULLETS, am.

4 Patented Nov. 20, 1847.

UNITED STATES PATE T OFFICE.

GEO. W. CAMPBELL, OF BELLEVILLE,.NEW JERSEY.

IMPROVEMENT lN-THE MANUFACTURE OF BULLETS, 80o.

Specification forming part of Letters Patent N0. 5,37 I dated November20, 1847.

Too. whom it may concern Be it known that I, G. W. CAMPBELL, of -Belleville, in the county of Essex and State of New Jersey, have inventednew and useful improvements in constructing endless series of molds forcasting bullets, buckles, and other articles in lead; and I do herebydeclare that the following is a full, clear, and exact'description ofthe principle or character'which dis-- tinguishes them from all otherthings before known and of the manner of making, constructing, and usingthe same, reference being hadto the'aecompanying drawings, makingpart ofthis specification, in which- Figure 1 is a vertical section through.the.

center of the bullet-mold, and Fig. 2 a representation of a buckle-moldwith a furnace connected.

The same letters indicate like parts in both,

let-molds the sections are cubical blocks of metal B, jointed togetherat their inner edges, k, soas to form an endless chain, as is clearlyshown in Fig. 1. In the sides of each of these metal blocks, next to thesucceeding ones, are recesses of a semi-spherical form, and the twobeing closed form aperfeet bullet-mold. This endless chain thusconstructed is sustained by three cylinders or'polygonal prisms, E,placed equidistant in a triangular position, two of them being on thesame level, by which it will be observed that that portion between thetwo upper cylinders has all its sections closed, so as to receive themolten lead from a spout in the furnace, where it is melted, as theendless chain passes .nnder it'with. a velocity justsuflider, over whichthey are carried by its revolution and opened, which tends to loosen thecasting. It then closes, descending in a'straight line to the lowercylinder, making a turn around it short enough to open the mold withboth faces downward sufficiently to drop out the bullet. Thence theempty sections ascend again to the upper level, ready to receive anothercasting. The usual sprue-hole is formed in the upper part of the mold,and a continuous trough may be inade along the outer face of thesections, it. required. By this arrangement it will. be perceived thateach section will be alternately separated from those adjoining, andalso from the casting, which by this means can be readily detachedtherefrom,

-which last operation can be aided, it"found struction of endless-chainmolds may be made for castings of other descriptions, and'I intend toemploy my improvement for various purposes for which such an arrangementis obviously applicable.

I wish it to be understood that I do not claim as my invention anendless chain of molds, as that has bet-ore been made; but

What do I clarm 'asmy invention, and desire to secure by Letters Patent,is-

An endless chain of sections or molds passing over horizontal prisms oncylinders,'substantially as above specified, for making bullets audother castings, so that the sections of the molds shall be forced openfor the dis charge of their contents by passing around Witnesses:

JoHN A. ARMOUR, JNo. (J. LLOYD.

